Feeding and distributing apparatus for roller mills



A. HOQBERECHT Original Filed ,Sept. 13. 1922 In D67ZZ07 7 3:7 .HZhv-ZJZoZcrecZZ FEEDING AND DISTRIBUTING APPARATUS FOR ROLLER MILLS N ov Nov.10,1925- A. HOBERECHT FEEDING AND DISTRIBUTING APPARATUS FOR ROLLERHILLS Original Filed Sept. 13. 1922 2 Sheets-Sheet 2 Patented Nov. 10,1925.

ALBERT HOBERECHT, or Dos ANGELES,CALIFOR1IA, Ass IG No'Ivor one-Hana. r0

EDWARD MCKAIN. or LOS ANGDLEs, c-AL'IronN'IA.

FEEDING AND DISTRIBUTING APPARATUS roe ROLLER ivIILIfs. V

Application filed SeptemberiS, 1922, Serial no. 587591 8. RenewedFebruary 4, 1925. i

T 0 (1 whom it may comma.- H

Be it known that I, ALBERT HoBEREo'Irr, a citizen of the United States,residing at Los Angeles, in the county of Los Angel'es 5 and State ofCalifornia, have invented new and useful Improvements in Feeding and.Distributing Apparatus for Roller Mills,

ot which the following is a specification.

This invention relates to improvements in a feeding and distributingdevice for roller mills such as is illustrated and described in crushingrolls disposed ther'ebelow in an even manner throughout their entirelength.

Anotherobject is to provide a feeding and distributing device in 'whicli'a rotary distribution of the grain or milling material is convertedinto a straight line throw.

Still another object is to provide a distributing apparatus in which thesize of the distributing outlets in the rotatable distributor may beconveniently regulated to suit the character of stock or grain beingoperated on. i I

Another and important object is to provide an adjustable deflectingmeans located adjacent the rotary distributor,.,wheneby to efiicientlycontrol the throw of grain or stock issuing thereform. A further objectis to provide a-distributing device so arranged that anyjforeign mattersuch as nuts, bolts, or other heavy metallic objects that would injurethe grain rollswould be arrested in their passage 40 therethrough. 1 p vU I accomplish-theabove objects by means of the mechanism describedherein and illustrated in the accompanying drawings, in which:

Fig.- 1 is a central longitudinal section through the'upper portion of aroller grind ing mill of usual form, showing my feeding apparatus insectional elevation in position thereon. I

Fig. 2 is a transverse sectional view taken on line 2-2 of Fig. 1',illustrating diagram mati'cally the action of my distributing member inconverting a rotary [throw of milling stock into a straight line throw.

and distributors for roller 'mills, Serial No.

. Fig. 3 is a vertical sectional elevation of the upper portion of aroller mill, taken on line 33 of Fig. 1, the, feeding and distributingmechanism being in elevation.

Fig. 4 is a plan view of aspider'designed for supporting the gear casingin position.

Fig. 5 is an elevation of grain distributor.

Fig. 6 is a partial sectional plan'v'ie w of the grain distributor,taken on une- 6' 6 of Fig. 5. p "j p Fig. 7 is a partial sectional planview of the distributor out-let adjusting means, taken on line 7*? ofFig. 5.

This construction is designed to"replace the mechanism illustrated in myoo pending appllcation heretofore referred to, mainly 'is" fitted with apair of cylindrical grain milling rolls 9 and 10, arranged tobe rotatedfrom a source of power, (not shown). Disposed above rolls 9 and 10'ar'eca'nt boards 11 and 12, upon which the 'grain or other stock dropsduring the op'erat-ion of the mill and by which it is deflected on tothe rollers in an even manner throughout their entire length.

The top closure b'oard13 is provided with a rectangular opening 1fl,'thelength of said for th'e'reason that I have simplified the dis tr butlngmechanism so as not; only to in- 1 openingelvt'en'ding the entire lengthas the" mill rolls 9 and 10 disposed therebelow, whilethewidth isapproximately equalto the distance betwe n'the u per edges of theboardsll and 12, as clearlyshown Fig. 3

of the drawings. Referring more par and 3, 15 designates my improvedfeeding and distributing apparatus, which referably consists of arectangular housing 16 which extends around the sides of 'a rectangularopening lfl'tormed closure board 13 of the mill. V The-oppositely'dispjosed end walls 170i the housing 16 and .the'side walls 19 arevertically disposed, ']the walls "19 being I adjustably mo nted asshownin Fig. 2 0

ticu'nrly to Figs 1 in the top the drawings, for the purpose ofadjusting the same to or from the distributor, as will t rigidly securedin position by means of a ply (not shown).

spider 23 having arms 24 which are bolted or otherwise secured to thetop wall 21 of housing 16. Vertically disposed in casing 22 is arevoluble shaft 25 to which is secured within the gear casing a beveledpinion 26 which meshes with a beveled driving pinion 7 secured to theinner end of a driv ing shaft 28. This shaft extends through the bearing29 to the outside of the rectan gularhousing 16 and. is provided with asuitable driving pulley (not shown).

Mounted on top wall 21, and surrounding opening 20 is an upward movablecircular casing 30 preferably formed of transparent material providedwith a top wall 81 supported by means of bolts 32, the transparent wallenabling the operator to observe the flow of stock passing to thedistributing mechanism located therebelow. I Supported above wall 31bymeans of bolts 32 is a circular'disk or wall 33 in which'is' centrallydisposed a thimble 34, the lower end of a grain delivery spout 85projecting thereinto, the upper end of the spout being connected toa'source of grain or stock sup- Secured to the upper end of shaft 25 androtating therewith is a rotary feeding pan 36, having an outwardlyinclined annular wall to facilitate a rapid and even distribution of thegrain or stock delivered thereto.

Top wall 31 is provided with a central circular opening 37 in which ismounted a short pipe or sleeve '38 adjustably secured by means of a setscrew 39 to the lower end of thimble 34, the lower end of the sleeveterminating within the feeding pan. By adjustably mounting the sleeve 38on thim ble 34, I am enabled to adjust or regulate the amountof grainor-stock deliveredto the feeding pan, and thus prevent an overflow togrinding rolls, or to drop sleeve 38 into bottom of feedingpan 36and'entir'ely 'shut off th stock supply to grinding rolls.

Secured'to bolts 32 disposed within the space enclosed by the circulartransparent wall of casing'30, and adjacent the'upper edge of feed pan36 is an annular deflecting ring 40,- frusto conical in form, designedto directthe grain or stock downwardly and inwardly and on to a circularstationary plate or ledge'41 secured in position on the upper wall'42 ofthe gear casing. By the provision of the deflecting ring 40-and plate41, all foreign substan es, such as bolts, nuts,

or other metallic or heavy objects that are accidentally mixed with thestock flowing through the grain; delivery spout will be arrested duringtheir passage through the distributing mechanism and lodged on the plateor ledge 41, from whence they may be readily removed by the operator byraising circular casing 30; while the stock or lighter material slidesor rolls off and passes on downward between gear case and the casing.

Mounted in opening 20 formed in wall 21 of housing 16 is an annulardeflecting ring 44 frusto conical in form and similar to' ring 40, ring44 directing the stock or grain falling thereon to the center of thedistrib utor 45 located therebelow. Distributor 45 is rigidly attachedto the lower end of shaft 25 by a set screw 46, and is preferably ofcircular form, having a bottom; wall 47. Bottom wall 47 is provided withan annular side wall 49 having a plurality of discharge openings 50formed therein and equally spaced apart. The size of openings 50 iscontrolled by an annular closure ring 51 disposedwithin the distributorand con tacting with the inner peripheral surface of its annularwall 49.Ring 51 is provided with a plurality of notches 52, equally spaced apartand similar in configuration to the discharge openings formed in thewall of the distributor. Ring 51 is held in adjustable relation to thedistributor wall by means of an adjusting bolt or screw. 53 which passesthrough a slot 54 formed in the upper edge of wall 49. By means of ring51 the size of th openings 50 in the annular wall maybequickly increasedor diminished while the feeder is not in open" alien, to suit thecharacter of material being distributed, thus when the mill is tooperate on bran or fine fluffy middling 5s the ring 51 may be adjustedso that the openings in the distributor wall will be unobstructed, andwhen wheat, barley, or coarse middlings or round stockfis being fed, thering; may be adjusted to decreasethe size of the openings. I a

The above adjustment may be found de sirable should the discharge ofgrain from the feed pan v86 be irregular, and in that event the openings50' in the distributor may be partially closed so'that a portion of thegrain will be retained in the bottom of the distributor; therebyavoiding all waviness or flickering of the material as it passes throughthe distributing openings to the i 1 grinding rolls. W

Adjustably suspended by means of bolts 60 is a material deflectingmember61, which is of greater diameter than the distributor 45. Thisdeflector preferably consists of an annular ring preferably circular incross section so that it will present'no sharp edges to the materialthat is forced outwardly to the rolls by the distributor 45. "When branor fine fiufiy middlings are being distributed to the rollers thedeflecting member eiwill be raised (so as to permit a run throw of'them'aterial to the rolls, while when Wheat, coarse middlings, or roundstock is being fed the deflector member 61 will be lowered into theposition as shown in Fig. 1 of the drawings so as tocontrol the throw ofthe material which is much heavier in character and travels farther thanthe lighter fluffy materials heretofore set forth. Ihe deflector 61 mayalso "be raised on one side and lowered on the other side so as toabsolutely'control the flow of milling material to the rolls, thuspermitting a larger quantity at one end and a. relatively smallerquantity at the opposite end of the rolls.

In Fig. 2 of the drawings I have illustrated diagrammatically thedistribution of the grain or stock from the distributing member 45, andin order to clearly illustrate the path of travel of the grain orothermaterial being fed to the mill from the distributor I have indicated the"same by a plurality of fin'e lines '62, emanating from each opening inthe distributor member. Grainor other material thrownfr om the openingsa adjacent the side walls 1 9 of the housing will be deflectedby saidwalls towards the center of the rolls, while grain impelled from theopenings indicated at N 7 once be apparent" thatI have provided an 'bwill be forced agreater distance" before striking the wal1s'19, and willbe deflected on to the rolls a greaterdistance fromtheir center than thegrain 'flowingfthrou gh the openings a-. The "o enin s c-+ "in'fthedistributor member being almost entirely out of line with the walls '19,the grain or other material will impinge towards the "end walls 17 andflow towardsthe extreme emis of the milling rolls 9 1 0, thuseffectingan even horizontal distribution of the grain or other materialthroughout the entire length of the milling rolls.

From the foregoing description it will be apparent that by enclosing thedistributor member 45 within a rectangular housing I am enabled tochange a circular distribution of the grain or other material from therevolving distributor into a straight line distribution or throw, thewalls of the housing forming an accurate and even deflecting means. Whenfeeding some classes of stock, such as wheat, having a tendency totravel farther than light fluffy stock, it may be found desirable tomove the oppositely disposed side walls 19 of the housing from eachother so that a larger quantity of stock will flow toward the center ofthe rolls, and to this end I have provided each of the side walls 19with an adjusting means 65, illustrated in this instance as a slot andset screw construction, although any other suitable convenient adjustingmeans may be employed. Q

As the grain is fed downwardly in a andsliding oft" the'tiutehe'dge oftheann deflectlng ring; 41', continuing onto annular .ati'on mu espositive and ve stream through the grain "spam the source of supply itpasses through the prevented from entering themills and injuring therolls. I p v p j I p The material eontmues-downwardi "'r'er lardeflecting ring 4& and which, deflectsfthe material towards the centerof the distributing member 15.4

.The material is thence thrown outwardly by distributing member45'through the openings-formed in its side wall mately' as shown in thediagrammatic view,

Fig. 20f the drawings. H g g V By providing an annulara'djustableidefleeting member 61 adjacent the "outlet-open ings in thedistributor 45, I- amen'abled to control thethrow of the material fromthe distributor in an "even and efficient manner. i From the foregoing,d'escrIpt on t w ll at extremely simple'means for, converting acircular flow of gram or other'stoch from stock will be Vfedevenly on.to the milling rolls throughout their entire length that the productresi'ilt'in'g from the mining aperproduct from the P giinding rollsl IIt -willb e noted from the foregoingde- 'scriptiofi that by meanestaistntuun device I am enabled tojdo away entirely with all forms ofhoppers, the flow of milling material passing through pipe 35 beingdelivered thereto through the medium of an elevator, reel, conveyor, orsifter.

trolling the-flow of the milling material passing through pipe 35 alldanger of delivering an excessive quantity of material Also, it will beobserved that by cone member disposed within said rectangular housingand below said delivery spout.

In a feeding and distributing-mechanism for roller mills, a rectangularhousing having an opening in its top wall, a stock inlet pipecommunicating with the opening in said housing, a rotary distributingmember mounted in said housing adapted to distribute stock directly tothe milling rolls, and

means to rotate said distributor.

3. In a feeding and distributing mechanism for roller mills, a housinghaving an opening in its top wall, a casing mounted on said housing oversaid opening, a stock delivery means communicating with said casing, arotary feeding member mounted below said delivery means, a rotarydistributing member mounted below said feeding ,member, a deflectingmember .mounted adjacent said distributing member,

communicating with the opening in said housing,

a rotary distributing member mounted in said housing, a stock deflectingmeans surrounding said rotary distributing member, and means to rotatesaid distributor.

6.-In a feeding and distributing mechanism for roller m1lls, a housinghaving an opening in its top wall, a stock-inlet tube communicating.with the opening in said housing, a rotary distributing member mountedin said housing, an adjustable stock deflecting means mounted in saidhousing surrounding said distributor, and means to rotate saiddistributor.

7. In a feeding and distributing mechanism for roller mills, a housinghaving an o enin therein a rotar feedin an b 7 b having stock outletopenings therein, means to increase or decrease the size of the stockoutlet openings in the distributing member, and means to rotate saiddistributor.

9. In a feeding and distributing mechanism for roller mills, arectangular housing having an opening in its top wall, a stock inlettube communicating with the opening in said housing, a rotary feedingpan mounted-below said inlet tube, means to regulate the flow of stockto said feeding pan, a rotary distributing member mounted below saidfeeding pan, means to direct the flow of stock from said feeding pan tosaid distributor, and means to rotate the feeding pan and thedistributor in unison.

In witness that I claim the foregoing-I have hereunto subscribed mv namethis 23rd day of August, 1922.

ALBERT HOBEREGHT.

